<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		.wp {
			width: 300px;
			height: 200px;
			border: 1px solid red;
		}

		.inner {
			width: 200px;
			height: 50px;
			background-color: blue;

			float: left;
		}
	</style>
</head>
<body>

	<div class="wp">
		<span>上面的文字...</span>
		<div class="inner"></div>
		<span>下面的文字...</span>
	</div>
	
</body>
</html>